87261926782 has 16 divisors (see below), whose sum is σ = 136671928560. Its totient is φ = 41732739328.

The previous prime is 87261926723. The next prime is 87261926803. The reversal of 87261926782 is 28762916278.

It is a happy number.

It is a super-2 number, since 2×87261926782² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

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, 7024243 + ... + 7036654.

It is an arithmetic number, because the mean of its divisors is an integer number (8541995535).

Almost surely, 2^87261926782 is an apocalyptic number.

87261926782 is a deficient number, since it is larger than the sum of its proper divisors (49410001778).

87261926782 is a wasteful number, since it uses less digits than its factorization.

87261926782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14061035.

The product of its digits is 8128512, while the sum is 58.

The spelling of 87261926782 in words is "eighty-seven billion, two hundred sixty-one million, nine hundred twenty-six thousand, seven hundred eighty-two".