761550721240 has 16 divisors (see below), whose sum is σ = 1713489122880. Its totient is φ = 304620288480.

The previous prime is 761550721231. The next prime is 761550721303. The reversal of 761550721240 is 42127055167.

It is a super-3 number, since 3×761550721240³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 19038768031 = 761550721240 / (7 + 6 + 1 + 5 + 5 + 0 + 7 + 2 + 1 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 761550721193 and 761550721202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9519383976 + ... + 9519384055.

It is an arithmetic number, because the mean of its divisors is an integer number (107093070180).

Almost surely, 2^761550721240 is an apocalyptic number.

It is an amenable number.

761550721240 is an abundant number, since it is smaller than the sum of its proper divisors (951938401640).

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

761550721240 is a wasteful number, since it uses less digits than its factorization.

761550721240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19038768042 (or 19038768038 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 761550721240 in words is "seven hundred sixty-one billion, five hundred fifty million, seven hundred twenty-one thousand, two hundred forty".