29459373640 has 32 divisors (see below), whose sum is σ = 66568090680. Its totient is φ = 11733171712.

The previous prime is 29459373617. The next prime is 29459373653. The reversal of 29459373640 is 4637395492.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20216858596 + 9242515044 = 142186^2 + 96138^2 .

It is a super-2 number, since 2×29459373640² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571119 + ... + 1589758.

Almost surely, 2^29459373640 is an apocalyptic number.

29459373640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29459373640 is an abundant number, since it is smaller than the sum of its proper divisors (37108717040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29459373640 is a wasteful number, since it uses less digits than its factorization.

29459373640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161121 (or 3161117 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 29459373640 in words is "twenty-nine billion, four hundred fifty-nine million, three hundred seventy-three thousand, six hundred forty".