45390293381 has 4 divisors (see below), whose sum is σ = 46356044352. Its totient is φ = 44424542412.

The previous prime is 45390293339. The next prime is 45390293401. The reversal of 45390293381 is 18339209354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45390293381 - 2¹⁰ = 45390292357 is a prime.

It is a super-2 number, since 2×45390293381² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 965750923 = 45390293381 / (4 + 5 + 3 + 9 + 0 + 2 + 9 + 3 + 3 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45390203381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482875415 + ... + 482875508.

It is an arithmetic number, because the mean of its divisors is an integer number (11589011088).

Almost surely, 2^45390293381 is an apocalyptic number.

It is an amenable number.

45390293381 is a deficient number, since it is larger than the sum of its proper divisors (965750971).

45390293381 is an equidigital number, since it uses as much as digits as its factorization.

45390293381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965750970.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 45390293381 in words is "forty-five billion, three hundred ninety million, two hundred ninety-three thousand, three hundred eighty-one".