29690391480 has 128 divisors (see below), whose sum is σ = 90670648320. Its totient is φ = 7776381440.

The previous prime is 29690391473. The next prime is 29690391491. The reversal of 29690391480 is 8419309692.

It is a Cunningham number, because it is equal to 172309²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1714465 + ... + 1731695.

It is an arithmetic number, because the mean of its divisors is an integer number (708364440).

Almost surely, 2^29690391480 is an apocalyptic number.

29690391480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29690391480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45335324160).

29690391480 is an abundant number, since it is smaller than the sum of its proper divisors (60980256840).

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

29690391480 is a wasteful number, since it uses less digits than its factorization.

29690391480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17501 (or 17497 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 29690391480 in words is "twenty-nine billion, six hundred ninety million, three hundred ninety-one thousand, four hundred eighty".