40145107454 has 4 divisors (see below), whose sum is σ = 60217661184. Its totient is φ = 20072553726.

The previous prime is 40145107451. The next prime is 40145107529. The reversal of 40145107454 is 45470154104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40145107454² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40145107451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10036276862 + ... + 10036276865.

It is an arithmetic number, because the mean of its divisors is an integer number (15054415296).

Almost surely, 2^40145107454 is an apocalyptic number.

40145107454 is a deficient number, since it is larger than the sum of its proper divisors (20072553730).

40145107454 is a wasteful number, since it uses less digits than its factorization.

40145107454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20072553729.

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 40145107454 in words is "forty billion, one hundred forty-five million, one hundred seven thousand, four hundred fifty-four".