771533425450042 has 4 divisors (see below), whose sum is σ = 1157300138175066. Its totient is φ = 385766712725020.

The previous prime is 771533425450003. The next prime is 771533425450079. The reversal of 771533425450042 is 240054524335177.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 643175198088201 + 128358227361841 = 25360899^2 + 11329529^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192883356362509 + ... + 192883356362512.

Almost surely, 2^{771533425450042} is an apocalyptic number.

771533425450042 is a deficient number, since it is larger than the sum of its proper divisors (385766712725024).

771533425450042 is a wasteful number, since it uses less digits than its factorization.

771533425450042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385766712725023.

The product of its (nonzero) digits is 14112000, while the sum is 52.

The spelling of 771533425450042 in words is "seven hundred seventy-one trillion, five hundred thirty-three billion, four hundred twenty-five million, four hundred fifty thousand, forty-two".