29951840356 has 9 divisors (see below), whose sum is σ = 52416326361. Its totient is φ = 14975747112.

The previous prime is 29951840329. The next prime is 29951840357. The reversal of 29951840356 is 65304815992.

The square root of 29951840356 is 173066.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 579364900 + 29372475456 = 24070^2 + 171384^2 .

It is a super-2 number, since 2×29951840356² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29951840357) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 302866 + ... + 389398.

Almost surely, 2^29951840356 is an apocalyptic number.

29951840356 is the 173066-th square number.

It is an amenable number.

29951840356 is a deficient number, since it is larger than the sum of its proper divisors (22464486005).

29951840356 is an frugal number, since it uses more digits than its factorization.

29951840356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173070 (or 86535 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 29951840356 in words is "twenty-nine billion, nine hundred fifty-one million, eight hundred forty thousand, three hundred fifty-six".