145307220684431 has 8 divisors (see below), whose sum is σ = 156846095738640. Its totient is φ = 133819973707392.

The previous prime is 145307220684401. The next prime is 145307220684433. The reversal of 145307220684431 is 134486022703541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145307220684431 - 2³⁴ = 145290040815247 is a prime.

It is a super-2 number, since 2×145307220684431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145307220684431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145307220684433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12907013441 + ... + 12907024698.

It is an arithmetic number, because the mean of its divisors is an integer number (19605761967330).

Almost surely, 2^{145307220684431} is an apocalyptic number.

145307220684431 is a deficient number, since it is larger than the sum of its proper divisors (11538875054209).

145307220684431 is a wasteful number, since it uses less digits than its factorization.

145307220684431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25814038585.

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 145307220684431 in words is "one hundred forty-five trillion, three hundred seven billion, two hundred twenty million, six hundred eighty-four thousand, four hundred thirty-one".