29790450261 has 48 divisors (see below), whose sum is σ = 51026189760. Its totient is φ = 16510152960.

The previous prime is 29790450233. The next prime is 29790450301. The reversal of 29790450261 is 16205409792.

29790450261 is a `hidden beast` number, since 2 + 97 + 90 + 450 + 26 + 1 = 666.

It is not a de Polignac number, because 29790450261 - 2¹⁹ = 29789925973 is a prime.

It is a super-2 number, since 2×29790450261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29790450161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29545 + ... + 245873.

It is an arithmetic number, because the mean of its divisors is an integer number (1063045620).

Almost surely, 2^29790450261 is an apocalyptic number.

It is an amenable number.

29790450261 is a deficient number, since it is larger than the sum of its proper divisors (21235739499).

29790450261 is a wasteful number, since it uses less digits than its factorization.

29790450261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216466 (or 216463 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 29790450261 in words is "twenty-nine billion, seven hundred ninety million, four hundred fifty thousand, two hundred sixty-one".