38401642537545 has 64 divisors (see below), whose sum is σ = 71934413193216. Its totient is φ = 17126488696320.

The previous prime is 38401642537519. The next prime is 38401642537547. The reversal of 38401642537545 is 54573524610483.

It is not a de Polignac number, because 38401642537545 - 2¹¹ = 38401642535497 is a prime.

It is a super-2 number, since 2×38401642537545² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38401642537547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 309411492 + ... + 309535578.

It is an arithmetic number, because the mean of its divisors is an integer number (1123975206144).

Almost surely, 2^{38401642537545} is an apocalyptic number.

38401642537545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38401642537545 is a deficient number, since it is larger than the sum of its proper divisors (33532770655671).

38401642537545 is a wasteful number, since it uses less digits than its factorization.

38401642537545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196030.

The product of its (nonzero) digits is 48384000, while the sum is 57.

The spelling of 38401642537545 in words is "thirty-eight trillion, four hundred one billion, six hundred forty-two million, five hundred thirty-seven thousand, five hundred forty-five".