469778154420640 has 192 divisors, whose sum is σ = 1247782148474400. Its totient is φ = 165938816139264.

The previous prime is 469778154420613. The next prime is 469778154420667. The reversal of 469778154420640 is 46024451877964.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (469778154420613) and next prime (469778154420667).

It can be written as a sum of positive squares in 16 ways, for example, as 331918863376 + 469446235557264 = 576124^2 + 21666708^2 .

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, 29150347 + ... + 42300106.

Almost surely, 2^{469778154420640} is an apocalyptic number.

469778154420640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

469778154420640 is an abundant number, since it is smaller than the sum of its proper divisors (778003994053760).

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

469778154420640 is a wasteful number, since it uses less digits than its factorization.

469778154420640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71450619 (or 71450611 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 67.

The spelling of 469778154420640 in words is "four hundred sixty-nine trillion, seven hundred seventy-eight billion, one hundred fifty-four million, four hundred twenty thousand, six hundred forty".