39460721145 has 16 divisors (see below), whose sum is σ = 63169562112. Its totient is φ = 21034915200.

The previous prime is 39460721143. The next prime is 39460721173. The reversal of 39460721145 is 54112706493.

It is not a de Polignac number, because 39460721145 - 2¹ = 39460721143 is a prime.

It is a super-2 number, since 2×39460721145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39460721097 and 39460721106.

It is not an unprimeable number, because it can be changed into a prime (39460721143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644932 + ... + 703461.

It is an arithmetic number, because the mean of its divisors is an integer number (3948097632).

Almost surely, 2^39460721145 is an apocalyptic number.

It is an amenable number.

39460721145 is a deficient number, since it is larger than the sum of its proper divisors (23708840967).

39460721145 is a wasteful number, since it uses less digits than its factorization.

39460721145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350352.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 39460721145 in words is "thirty-nine billion, four hundred sixty million, seven hundred twenty-one thousand, one hundred forty-five".